c# - Dynamic Remove Function -

i have following code works more reusable or getting same results. rather remove_at_weight , remove_at_code function generic remove function can choose field compare , compare against.

so example might have object called recordo_3 has third field "string description" , want check field out having write new "remove_at_description" function.

i approaching wrong angle , there better way of doing using design patten etc. if please advise. hope makes sense.

class recordo {     private string _code;      public string code     {         { return _code; }         set { _code = value; }     }     private int _weight;      public int weight     {         { return _weight; }         set { _weight = value; }     } }  private void form1_load(object sender, eventargs e) {     list<recordo> lr = new list<recordo>();      lr.add(new recordo() {code = "qqq", weight = 10});     lr.add(new recordo() { code = "aaa", weight = 20 });     lr.add(new recordo() { code = "aaa", weight = 10 });     lr.add(new recordo() { code = "qqq", weight = 10 });                  lr = remove_at_code(lr,"qqq");     lr = remove_at_weight(r, "20");     messagebox.show("done!"); }  private static list<recordo> remove_at_weight(list<recordo> lr, int weight) {     (int = lr.count-1; > -1; i--)     {         if (lr[i].weight == weight)         {             lr.removeat(i);         }     }     return lr; }  private static list<recordo> remove_at_code(list<recordo> lr, string code) {     (int = lr.count-1; > -1; i--)     {         if (lr[i].code == code)         {             lr.removeat(i);         }     }     return lr; } 

first let's without generic method have asked (for might consider reflection property name - see below). work can done in simple way using linq this

lr.removeall(r => r.code.equals("qqq"));  lr.removeall(r => r.weight == 20); 

now if want generic method, can try this

public static class myextension {     public static void removeallwithpropertyvalue<t>(this list<t> list, string propertyname, object value)     {         var property = typeof(t).getproperty(propertyname);         list.removeall(item => property.getvalue(item, null).equals(value));     } } 

and use custom extension as

lr.removeallwithpropertyvalue("code", "qqq"); lr.removeallwithpropertyvalue("weight", 20); 

note: not type-safe, , didn't validation!